AD8363 데이터 시트보기 (PDF) - Analog Devices
부품명
상세내역
제조사
AD8363 Datasheet PDF : 29 Pages
| |||
AD8363
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
Data Sheet
TCM2/PWDN 1
CHPF 2
VPOS 3
COMM 4
AD8363
TOP VIEW
12 VTGT
11 VREF
10 VPOS
9 COMM
NOTES
1. NC = NO CONNECT. DO NOT CONNECT TO THIS PIN.
2. THE EXPOSED PAD IS THE SYSTEM COMMON
CONNECTION AND IT MUST HAVE BOTH A GOOD
THERMAL AND GOOD ELECTRICAL CONNECTION
TO GROUND.
Figure 2. Pin Configuration
Table 3. Pin Function Descriptions
Pin
No. Mnemonic Description
1
TCM2/PWDN This is a dual function pin used for controlling the amount of nonlinear intercept temperature
compensation at voltages <2.5 V and/or for shutting down the device at voltages >4 V. If the
shutdown function is not used, this pin can be connected to the VREF pin through a voltage
divider.
2
CHPF
Connect this pin to VPOS via a capacitor to determine the −3 dB point of the input signal high-
pass filter. Only add a capacitor when operating at frequencies below 10 MHz.
3, 10 VPOS
Supply for the Device. Connect these pins to a 5 V power supply. Pin 3 and Pin 10 are not internally
connected; therefore, both must connect to the source.
4, 9 COMM
System Common Connection. Connect these pins via low impedance to system common.
5
CLPF
6
VOUT
7
VSET
8
TEMP
11
VREF
12
VTGT
13
NC
Connection for Loop Filter Integration (Averaging) Capacitor. Connect a ground-referenced
capacitor to this pin. A resistor can be connected in series with this capacitor to improve loop
stability and response time. Minimum CLPF value is 390 pF.
Output Pin in Measurement Mode (Error Amplifier Output). In measurement mode, this pin is
connected to VSET. This pin can be used to drive a gain control when the device is used in
controller mode.
The voltage applied to this pin sets the decibel value of the required RF input voltage that results
in zero current flow in the loop integrating capacitor pin, CLPF. This pin controls the variable gain
amplifier (VGA) gain such that a 50 mV change in VSET reduces the gain by approximately 1 dB.
Temperature Sensor Output.
General-Purpose Reference Voltage Output of 2.3 V.
The voltage applied to this pin determines the target power at the input of the RF squaring circuit. The
intercept voltage is proportional to the voltage applied to this pin. The use of a lower target
voltage increases the crest factor capacity; however, this may affect the system loop response.
No Connect.
14
INHI
15
INLO
16
TCM1
EPAD
This is the RF input pin for frequencies up to and including 2.6 GHz. The RF input signal is normally
ac-coupled to this pin through a coupling capacitor.
This is the RF input pin for frequencies above 2.6 GHz. The RF input signal is normally ac-coupled
to this pin through a coupling capacitor.
This pin is used to adjust the intercept temperature compensation. Connect this pin to VREF
through a voltage divider or to an external dc source.
Exposed Pad. The exposed pad is the system common connection and it must have both a good
thermal and good electrical connection to ground.
Equivalent
Circuit
See Figure 39
See Figure 48
Not
applicable
Not
applicable
See Figure 41
See Figure 41
See Figure 40
See Figure 35
See Figure 36
See Figure 42
Not
applicable
See Figure 34
See Figure 34
See Figure 38
Not
applicable
Rev. B | Page 8 of 29
Share Link: 